Home / 5,177.80-7,767.87-1,890.91

Finding the Fourth Proportional to 5,177.80, 7,767.87 and 1,890.91

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Solution

The fourth proportional to 5,177.80, 7,767.87 and 1,890.91 is: 2,836.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,177.80 : 7,767.87 = 1,890.91 : x
  2. Step 2: Convert to fraction form
    5,177.80/7,767.87 = 1,890.91/x
  3. Step 3: Cross multiply
    5,177.80x = 7,767.87 × 1,890.91
  4. Step 4: Simplify right side
    5,177.80x = 14,688,343.06
  5. Step 5: Solve for x
    x = 14,688,343.06/5,177.80
  6. Step 6: Final answer
    x = 2,836.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.